One of the recent revelations is that Windows 8 will include support for push notifications, probably something on the lines of toast-styled notifications found on Windows Phone 7.
Windows Phone 7: Toast-Styled Push Notifications
As reported by WinRumors, the latest Windows 8 Build 7850.0.winmain_win8m1.100922-1508 contains references to a number of DLL files which points to such a functionality for the next iteration of the world’s most widely used desktop operating system.
- wpnapps.dll “Windows Push Notification Apps”
- wpncore.dll “Windows Push Notification Core”
- wpnprv.dll “Windows Push Notification Platform Connection Provider”